Apparatus and methods for introducing portals in bone
An apparatus and method for introducing portals into bone is described herein. An example apparatus for introducing portals into bone includes a handle, a base, and a driving member. The driving member can be made to project past the base by operating the handle. The base is detachable from the handle. The apparatus also includes a guide coupled at a first end to the handle and at a second end to the base. The base is detachably coupled to the guide. A base coupling detachably coupling the base to the guide includes an actuating member movable between a coupled configuration wherein the base is coupled to the guide and an uncoupled configuration wherein the base is released from the guide. The actuating member is arranged so that motion of the handle toward the base moves the actuating member from the coupled configuration to the uncoupled configuration.
1. An apparatus for introducing a bone portal into a bone of a subject, the apparatus comprising:
a handle;
a base;
a driving member;
wherein the driving member is movable between a first position wherein the driving member is retracted behind the base to a second position wherein the driving member projects past the base by operating the handle and the base is detachable from the handle;
a guide coupled at a first end to the handle and at a second end to the base wherein the base is detachably coupled to the guide; and
a base coupling detachably coupling the base to the guide wherein the base coupling comprises an actuating member movable between a coupled configuration wherein the base is coupled to the guide and an uncoupled configuration wherein the base is released from the guide, and the actuating member is arranged so that motion of the handle toward the base moves the actuating member from the coupled configuration to the uncoupled configuration.
2. Apparatus according to claim 1 wherein the guide comprises a tubular shield.
3. Apparatus according to claim 1 wherein the guide is coupled to telescope into the handle.
4. Apparatus according to claim 3 comprising a spring arranged to bias the guide to project outwardly of the handle.
5. Apparatus according to claim 1 wherein the base coupling comprises a profiled tab on the guide having a projection engaged in a recess on the base and the actuating member slidably engages the tab wherein axial motion of the actuating member along the tab draws the projection out of engagement with the recess.
6. Apparatus according to claim 1 wherein:
the base coupling comprises first and second profiled tabs on the guide, each tab having a projection engaged in a corresponding recess of the base;
the actuating member slidably engages the first and second tabs; and
axial motion of the actuating member away from the handle draws the projections out of engagement with the corresponding recesses.
7. Apparatus according to claim 1 comprising an adhesive on a proximal face of the base.
8. Apparatus according to claim 1 wherein the base comprises an annular wall projecting from the base toward the handle and the base has an opening within the annular wall aligned with the driving member.
9. Apparatus according to claim 1 wherein the base is stiff.
10. Apparatus according to claim 1 comprising a coupling on the base adapted to releasably retain a strain relief member.
11. Apparatus according to claim 10 wherein the coupling comprises a hook.
12. Apparatus according to claim 11 wherein the hook is oriented so that a tip of the hook points toward the driving member.
13. Apparatus according to claim 1 wherein the guide is non-rotatably engaged to each of the handle and the base.
14. Apparatus according to claim 1 wherein the guide is substantially opaque.
15. Apparatus according to claim 1 wherein at least part of the base comprises a flexible material.
16. Apparatus according to claim 1 wherein at least part of the base comprises a foldable or rollable material.
17. Apparatus according to claim 1 wherein at least part of the base comprises a moldable material.